92 lines
3.1 KiB
Java
92 lines
3.1 KiB
Java
/*
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* Copyright (c) 2024, Alibaba Group Holding Limited. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package org.openjdk.bench.java.io;
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import org.openjdk.jmh.annotations.*;
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import org.openjdk.jmh.infra.Blackhole;
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import java.io.*;
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import java.nio.charset.StandardCharsets;
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import java.util.HexFormat;
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import java.util.concurrent.TimeUnit;
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@BenchmarkMode(Mode.AverageTime)
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@OutputTimeUnit(TimeUnit.MICROSECONDS)
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@Fork(2)
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@Measurement(iterations = 6, time = 1)
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@Warmup(iterations = 4, time = 2)
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@State(Scope.Thread)
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public class DataOutputStreamBench {
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@Param({"ascii", "utf8_2_bytes", "utf8_3_bytes", "emoji"})
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public String charType;
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ByteArrayOutputStream bytesOutput;
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DataOutputStream dataOutput;
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ObjectOutputStream objectOutput;
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String[] strings;
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@Setup(Level.Trial)
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public void setup() throws Exception {
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byte[] bytes = HexFormat.of().parseHex(
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switch (charType) {
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case "ascii" -> "78";
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case "utf8_2_bytes" -> "c2a9";
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case "utf8_3_bytes" -> "e6b8a9";
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case "emoji" -> "e29da3efb88f";
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default -> throw new IllegalArgumentException("bad charType: " + charType);
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}
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);
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String s = new String(bytes, 0, bytes.length, StandardCharsets.UTF_8);
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strings = new String[128];
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for (int i = 0; i < strings.length; i++) {
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strings[i] = "A".repeat(i).concat(s.repeat(i));
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}
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bytesOutput = new ByteArrayOutputStream(1024 * 64);
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dataOutput = new DataOutputStream(bytesOutput);
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objectOutput = new ObjectOutputStream(bytesOutput);
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}
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@Benchmark
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public void dataOutwriteUTF(Blackhole bh) throws Exception {
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bytesOutput.reset();
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for (var s : strings) {
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dataOutput.writeUTF(s);
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}
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dataOutput.flush();
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bh.consume(bytesOutput.size());
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}
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@Benchmark
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public void objectWriteUTF(Blackhole bh) throws Exception {
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bytesOutput.reset();
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for (var s : strings) {
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objectOutput.writeUTF(s);
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}
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objectOutput.flush();
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bh.consume(bytesOutput.size());
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}
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}
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